Sample supply unit



FIG. 1 is a front, top and right side perspective view of a sample supply unit according to the design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a rear view thereof;

FIG. 8 is an enlarged cross-sectional view taken along line 8-8 of FIG. 2; and,

FIG. 9 is a front, top and right side perspective view thereof shown in an opened position.

The dashed broken lines show portions of the sample supply unit that form no part of the claimed design. The dot-dash broken lines represent the bounds of the claim. None of the broken lines form part of the claimed design. 

CLAIM The ornamental design for a sample supply unit, as shown and described. 